Brian has the right idea with the engine when he is tipping the car works well as it removed the pick up from the fuel for the most part. Good way to check. The engine should be ok at that temp we usually run them anywhere between the 230 to 250 mark. This is F. obviously. But for the stalling right after the pick up of the car. Question would need to be asked does the engine or for that matter the car come into the pits with high idle like Uga is saying to lean and high idle or does it come in normal with no real signs of lean and then just shut off. If this is the case no power loss with the engine running on the track on the corners and also top speed and such. I would tell you to bump the idle up a slight bit. If you have power loss somewhere while running on the track look into air leaks or lean problems. They are the same animal caused by 2 different reasons. Both lean 1 from not enough fuel and 2 from air causing more air to get in around the carb resulting in lean from not enough fuel from the air leak. Don't be afraid to turn the idle up a slight bit from factory and also so you know the IDM engines will run slightly rich on the bottom end. Richer then the Nova's do. So normal to have very small wet glow plug and dry piston on top.